3. Let’s suppose a mutation in the glucocorticoid receptor does not prevent the binding of the glucocorticoid hormone to the protein but prevents the ability of the receptor to activate transcription. Make a list of all the possible defects that may explain why transcription cannot be activated
The transcription cannot be activated due to the following reasons-
1)The mutation migh have been in the domain of the receptor that activates RNA Pol so transcription would not be activated even if the hormone binds the recepor.
2)The mutation might have prevented the dimerization of the receptor.
3)The receptor could not travel to the nucleus if the muation would be in the nuclear localization domain.
4)The mutation might have stopped HSP 90 from being released if it was in the HSP 90 domain.
5)The receptor might not recognize glucocorticoid receptor domain if it was in the DNA binding domain.
3. Let’s suppose a mutation in the glucocorticoid receptor does not prevent the binding of the...
In female mice, both the glucocorticoid (cortisol) receptor and the estrogen receptor are expressed in liver cells (hepatocytes). The control element to which the glucocorticoid receptor binds is a short-strip of DNA that can accommodate the binding of the glucocorticoid receptor dimer. This control element is called a glucocorticoid response element (GRE). It is located1000 bp downstream from the poly-A site for the PEPCK gene. When this gene is activated by cortisol, it helps the hepatocyte to release glucose into...
Drosopholia eye development is an example of cell differentiation directed by signal binding to a receptor tyrosine kinase (RTK). In this pathway, R7 photoreceptor development requires a receptor (SEV, sevenless), which is activated by binding to a plasma membrane bound signal (BOSS, bride-of-sevenless) displayed on the adjacent R8 cell Receptor activation leads to activation of RAS via two proteins, Drk (down- stream of receptor kinases) and Sos (son-of-sevenless). Activated RAS leads to activation of a phosphorylation cascade that activates the...
1.) In a small number of patients whose families appear to have
all the classical characteristics of FAP, a mutation cannot be
found in the APC cDNA. What are two possible reasons for why
mutations may not be found in some patients whose families appear
to have FAP?
2.) Using the diagrams of APC domains and interactions provided
in the case study, hypothesize the most likely effect of this
mutation on APC ability to perform its function within the protein...
1) Suppose that gene A 3,000 bp. Suppose that g contained within intron 1 opposite directions for the two genes. covers 10,000 base pairs (bp) and has 2 exons; the intron in gene A is ene B covers 1,500 bp and has two exons. Gene B is completely of gene A. The direction of the transcriptional bubble moves in A. Draw the genomic organization (i.e., exons and introns) of gene A AND gene B. Label the polarity of the DNA...
1. (1 pt) If a gene is repressible and under positive control, A. Is the regulatory protein an activator or repressor? B. Explain how an effector molecule, which binds to the regulatory protein, alters the regulatory protein’s ability to regulate expression of the gene. 2. (1 pt) Cis and trans are two terms used to describe mutations. A. Explain the molecular difference between these terms. B. indicate which type of mutation (cis or trans) is dominant to wild-type and which...
can someone explain how to answer this with reasons why
30-45 mins after estrogen addition: Acchyiase (HAT, odde auhye 60-90 mins after estrogen addition: Reauitment ef Poy to open 7. T identify the Gene X DNA element responsible for regulation by a Growth Fagor, you perform a linker scanning experiment in which you mutate 10 bp Tegions centered around positions -205 to-5 in the Gene X promoter/promoter- proximal region (wt wild-type promoter). The promoter variants were tested for their ability...
Hagrid has purified a protein from unicom sweat and called UNI-1. He has then doned the Unit gone and inserted in rat zygotes (by microinjection) a recombinant construct containing the Uni-1 coding sequence its entire 5 UTR region, covering both the minimal promoter and a series of cutative regulatory als elements. The mutantrats develop glorious, luminous hair. Hagrid has also discovered that the UNI-1 protein binds very tightly to DNA and hypothesizes it is a transcription factor that regulates proliferation...
Yet, all the cells in your body contain the same
genes (and same alleles). The difference across cell types
is that genes get selectively expressed (turned on or off)
based on the proteins needed for cellular function given their
environment.
Select which statement explains the reason why hair does not
normally grow on your muscle cells.
a.
Muscle cells have the gene for keratin, but do not express
it
b.
Muscle cells do not have the gene for keratin and...
please help!!
transcription? How could the presence of a hormone in the blood have an effect on this structure? 6 points 3. What is an enhancer region and why is it important in the regulation of eukaryotic Contents Cancer Genes that cause cancer are called oncogenes. d. promoter genes. a. operator genes. b. pseudogenes.c 2A mutation in which of the following genes would be LEAST likely lead to a cancer? a. growth hormone gene b. growth hormone receptor gene c....
3. (2 points) In the nematode roundworm, Caenorhabditis elegans, the LIN-14 protein controls the timing of certain cell divisions during development. LIN-14 protein levels are normally high in early development but decrease in the later stages. In a lin-4 mutant, the level of LIN-14 protein stays high throughout development, changing the pattern of cell divisions in the animal and producing defects in the shape of the animal. The lin-4 gene encodes a microRNA that binds to a sequence in the...